If Robinson can’t go this week in Oakland, the team would have no fullback on the roster. Ganther, 26, played both running back and fullback in training camp and then saw limited action in the first two games before being released on Sept. 2.

The 5-9, 220-pounder didn’t get any carries for the Seahawks, but is a capable runner and also can contribute on special teams.

There was a presumption that Henry’s release would clear a roster spot for an offensive tackle, since Russell Okung’s sprained ankle leaves Seattle potentially with just two healthy tackles in Sean Locklear and Tyler Polumbus.

Pete Carroll said the team was looking at ways to bolster the depth there, so expect another roster move Tuesday.